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arp omni 1


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9/3/1999 4:41 PM
Gus
 arp omni 1
need some help, does anyone know were I can find a schematic for an ARP omni 1 I have a friends that pulls down the Power Supply voltages. I fixed the power supply but I don't want to invest the time in drawing out the wiring and signals to troubleshoot the problem. Thanks  
 
 
 
 
 
Gus
  
9/3/1999 4:53 PM
Aron
Gus,  
 
 
 
Try posting on rec.music.synth or is it rec.music.makers.synth now?  
 
 
 
Anyway, that's how I got the schematics for all of my keyboards.  
 
 
 
Aron
  
9/3/1999 11:23 PM
Brad
Hi folks,  
 
 
 
I've looked all over for schematics for an Arp Omni 2  
 
and can't seem to find them, either. Mine drones a certain  
 
note, and I can't figure out what to change, with the weird  
 
key-contact setup they have. If anyone finds a schematic for your Omni 1, I'd be grateful if they would see if the Omni 2 is also there, and post it back here.  
 
 
 
Thanks
 
9/6/1999 7:50 AM
Dave Moore
Look for a shorted tantalum cap on the lines coming from the keyboard that is holding the note on. =^^= Dave Moore
  
9/6/1999 1:13 PM
Brad
Dave,  
 
Thanks, I'll try to track that down and change it.  
 
BTW, if anyone is interested, a couple of those little  
 
contact tines on this one were broken. I replaced them with  
 
a "B" guitar string, cut down and soldered in. I think it was .013 or .014. It worked pretty well.  
 
 
 
Thanks again,  
 
Brad  
 
  
9/6/1999 3:27 PM
ultra
I have copies of a full manual for the ARP Omni (model 2480), the ARP Odyessy covering models,2800, 2810, 2811, 2812 and 2813 and also a full manual for the ARP Axe model 2300. In addition there are other copies of trims and adjustments, with some schematics and overlays for various PCB assemblies and models ; model 2701 ( trims only ) PCB 2991 schematic, PCB 2992 schematic, PCB 2903 schematic, PCB 2994 schematic, PSU schematic and overlay from unknown model maufactured 1982,(factory designation PL3O-7547901 ), Upper keyer schematic and overlay from model unknown ( factory designation PL3O-7224201 ), EP4 control circuit schematic and board overlay, EP4 schematic and voice board overlay , Lower keyer schematic and overlay from model unknown ( factory designation PL3O-7224201 ),Lower keyer schematic from model unknown ( factory designation PL3O-7224301 ), Chroma computer interface schematic.  
 
If you require copies of any of these please contact me via email . Please only request copies if actually working on a particular unit ( otherwise my association with the photocopier will become too intimate ) .
  

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